👉 A sidecarist is a character in the novel "The Great Gatsby" by F. Scott Fitzgerald. They are described as being "not rich, not famous, but somehow more important than any of them." The author describes them as "the silent partner of the wealthy and powerful," who "has not been born, has never lived, or even thought about his own existence." Their role is to provide support and companionship for Gatsby's friends and family.